PSYCH101 Study Guide - Midterm Guide: Mary Ainsworth, Sympathetic Nervous System, Peripheral Nervous System

• School: University of Waterloo
• Department: Psychology
• Course: PSYCH101
• Professor: Paul Wehr

Document Summary

Explain the following expressions as they apply to neurons and neuronal communication: Lock & key ; all-or-non ; info flows downstream . (3 marks); define agonist and antagonist as they apply to neuronal communication and provide a detailed explanation of two examples (4 marks); explain the differences between localization of function and. Lateralization ; provide two examples of each (4 marks) Lock and key: when neurotransmitters are released at the axon terminal, they cross the synapse and fit in a particular receptor of the dendrite like a key in a lock. If the neurotransmitter binds to the receptor, it will trigger either of these reactions: excitatory: increasing action potentials. All or none: the all or none approach is based on the principle that the neural impulse is either all or none. Same goes with action potential, there either is an action potential or there is nothing at all. There is no such thing as somewhat firing or over firing.